title: Peptide maps of regulatory subunits of Bacillus subtilis RNA polymerase.
abstract: Peptide maps of four regulatory subunits of Bacillus subtilis RNA polymerase were obtained. Three sigma-like proteins (sigma 55, sigma 37, and sigma 29) as well as the transcription modification factor, delta (delta) protein, were shown to give unique peptide patterns. This observation demonstrates that each is a distinct protein species; none is derived from another by a simple proteolytic modification.
mesh_terms: D001412:Bacillus subtilis / Q000201:enzymology*; D004268:DNA-Binding Proteins; D012321:DNA-Directed RNA Polymerases / Q000032:analysis*; D050981:Erythroid-Specific DNA-Binding Factors; D010455:Peptides / Q000032:analysis; D012808:Sigma Factor / Q000032:analysis*; D014157:Transcription Factors / Q000032:analysis*
chemical_list: D004268:DNA-Binding Proteins; D050981:Erythroid-Specific DNA-Binding Factors; D010455:Peptides; D012808:Sigma Factor; D014157:Transcription Factors; D012321:DNA-Directed RNA Polymerases